Process and apparatus for the extrusion of elongate hollow...

Details Process and apparatus for the extrusion of elongate hollow... Process and apparatus for the extrusion of elongate hollow...

B - Operations, Transporting

29

C

18/787

B29C 47/90 (2006.01) B29C 47/00 (2006.01)

Patent

CA 1082868

ABSTRACT OF THE DISCLOSURE: A process for the production of a synthetic thermo- plastic plastics elongate section member having predetermined cross-sectional dimensions, which comprises extruding the section member from the die of an extrusion tool and drawing it through a calibrating tool at a rate substantially equal to the extrusion speed, the cross-sectional dimensions of the section member being produced in the extrusion tool being such that, taking into account the expansion of the section member on leaving the extrusion tool which automatically takes place, they are substantially equal to the said prede- termined cross-sectional dimensions. Also, an apparatus for producing such section member.

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